Crawler-mounted cotton boll harvester

Abstract

The application relates to a caterpillar type cotton boll combined harvester, belonging to the technical field of caterpillar vehicles. The combined harvester comprises a caterpillar chassis, a cab, a cotton picking table, a pneumatic conveying system and a side-dumping cotton box arranged on the caterpillar chassis; the cotton picking table is hinged to the caterpillar chassis; the conveying passage of the pneumatic conveying system has three sections of upper, middle and lower, the upper section is sleeved with the middle section, the middle section is hinged with the lower section, and the lower section is fixedly connected to the outlet of the cotton picking table; the caterpillar chassis comprises a main frame and two caterpillars installed on the two sides of the main frame, the main frame is fixedly provided with a diagonal brace and a lifting oil cylinder, the distance between the two caterpillars is greater than or equal to two meters, the two side surfaces of the cotton box are hinged with the diagonal brace and the lifting oil cylinder on the caterpillar chassis, and the cotton box can be overturned to one side of the caterpillar chassis. The combined harvester can be used for field harvesting of cotton in the Yellow River basin and the Yangtze River basin without the risk of rollover; cotton pneumatic output can be realized at multiple positions and multiple elevations; and the caterpillar is not prone to derailing.

Description

TECHNICAL FIELD

[0001] The present application relates to a light track-type cotton harvester, especially a cotton and cotton boll combined harvesting equipment, and belongs to the technical field of tracked vehicles. BACKGROUND

[0002] For a long time, the cotton produced in Xinjiang Uygur Autonomous Region accounts for an absolute position in the cotton yield in China. Xinjiang Uygur Autonomous Region has nearly 8000 cotton picking machines, and the cotton machine picking rate is more than 80%, and has a complete cotton processing production line.

[0003] Compared with the cotton produced in Xinjiang Uygur Autonomous Region, the cotton planting area in the Yellow River Basin and the Yangtze River Basin is greatly reduced year by year, mainly due to the low degree of cotton production mechanization, especially the lack of suitable cotton mechanized harvesting equipment, and the supporting field machine-picked cotton pretreatment equipment process route has not been established. The cotton area in the Yellow River Basin and the Yangtze River Basin is mainly individual small-scale cotton planting, and the machine plough way is narrow, so it is not convenient for large-scale operation machines to turn around in the field, and the operation efficiency is difficult to guarantee. Due to high soil humidity, foggy weather, heavy morning dew and high air humidity, the cotton fiber is weak and low in strength. The machine-picked cotton in the Yellow River Basin and the Yangtze River Basin has a water content of about 10% higher than that of the cotton produced in Xinjiang Uygur Autonomous Region. When using the traditional horizontal picking spindle to pick, it is difficult to pick completely, and the cotton will be tangled after half a day of picking spindle work, the picking rate will decrease, and the cotton fiber will be damaged. At the same time, the shedding rate of machine-picked cotton in the Yellow River Basin and the Yangtze River Basin is often 60% to 80%, and the unshedding or semi-shedding state cannot be machine-picked, which is also the reason for the low picking rate. When using the brush roller type picking method, the high-moisture content of the seed cotton can be picked, and the low shedding rate of the cotton field can also be picked without much effect on the picking rate. However, the combined picking machine type often picks cotton, cotton bolls, boll shells and a small amount of branches and causes high impurity content. The conventional sawtooth type cotton cleaning method requires that the moisture content of the seed cotton should not exceed 12%, and the moisture content of the cotton harvested in the Yellow River Basin and the Yangtze River Basin is often 18% to 25%, so it is not suitable to implement the sawtooth type cotton cleaning work at the same time as the cotton picking. In view of the lack of subsequent processing of machine-picked cotton with high impurity content and high moisture content in the Yellow River Basin and the Yangtze River Basin, the existing hand-picked cotton ginning production line needs to be upgraded and transformed to have the processing capacity of machine-picked cotton in the Yellow River Basin and the Yangtze River Basin, and to form a machine-picked cotton cleaning and processing process route suitable for the local conditions and matched with the cotton picking machine. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a track-type cotton boll combined picking machine suitable for cotton picking in the Yellow River Basin and the Yangtze River Basin.

[0005] The technical scheme provided by the present application to solve the above technical problems is: a tracked cotton boll combined harvester, comprising a tracked chassis and a cab, a cotton picking table, a pneumatic conveying system and a side-dumping cotton box arranged on the tracked chassis; the cotton picking table is hingedly connected to the tracked chassis through a suspension frame;

[0006] The pneumatic conveying system comprises a fan and a conveying passage; the conveying passage is divided into three sections, i.e., an upper section, a middle section and a lower section; the upper section is sleeved with the middle section, the middle section is hingedly connected with the lower section, and the lower section is fixedly connected to an outlet of the cotton picking table; the lower section of the conveying passage is floating with the cotton picking table, and an outlet of the upper section of the conveying passage is directly opposite to an inlet door of the front side of the cotton box;

[0007] The tracked chassis comprises a main frame and two tracks installed on both sides of the main frame; the main frame is provided with a cotton box base, a cotton box overturning support seat and a cotton box support stopper; the cotton box is installed on the cotton box base, the cotton box overturning support seat and the cotton box support stopper; an inclined support and a lifting oil cylinder are fixedly arranged on the main frame;

[0008] The distance between the two tracks is greater than or equal to two meters; the support points of the cotton box base, the cotton box overturning support seat and the lifting oil cylinder are located on the inner sides of the two tracks;

[0009] The two side surfaces of the cotton box are hingedly connected with the inclined support and the lifting oil cylinder; the front side of the cotton box is provided with the inlet door; the top of the cotton box is provided with an outlet door; when the lifting oil cylinder is lifted, the cotton box is overturned to one side of the tracked chassis.

[0010] Further, two self-pressing limiters are arranged on the front and rear positions of the tracks respectively; the limiter comprises a skid freely floating on the inner side of the track and a spring; the skid is composed of a flat bottom, two ends upturned and an inner guide groove; the inner guide groove of the skid is provided with two supports; the supports are horizontally provided with a core shaft; the two ends of the core shaft are respectively provided with a guide shaft perpendicular to the core shaft; the spring is sleeved on the guide shaft; one end of the guide shaft is fixed with the core shaft; the other end of the guide shaft is floating and penetrates into a limiting plate; the limiting plate is fixed on the lower layer of the main frame.

[0011] Further, the cotton box further comprises a group connecting pull rod, a continuous swing body and a chain harrow group; the group connecting pull rod comprises an upper pull rod and a lower pull rod; the upper pull rod is hingedly connected with a rotating chain harrow and the continuous swing body respectively; the lower pull rod is hingedly connected with a cotton box inclined support and the continuous swing body respectively; the chain harrow group comprises a fixed chain harrow group and a rotating chain harrow group; the fixed chain harrow group and the rotating chain harrow group are connected by a double pitch chain; the continuous swing body is hingedly connected with the side surface of the cotton box; the inlet door is hingedly connected with the side surface of the cotton box.

[0012] Further, the lower section of the conveying channel is opened at the bottom and provided with a heavy impurity separator and a high-speed airflow nozzle, the heavy impurity separator is located in front of the high-speed airflow nozzle, and the middle section of the conveying channel is provided with a green peach separating opening at the bottom.

[0013] Further, the rear part of the main frame adopts a double-layer structure and forms an extension support frame with a 20°-30° upward angle rearward and upward, the cotton box base and the cotton box overturning support seat are arranged on the extension support frame, and the cotton box support stop frame is arranged on both sides of the extension support frame.

[0014] Further, the track chassis further comprises a rear drive axle, a front axle, a main frame, an engine, a rear drive wheel, two tracks, a front tensioning wheel, a carrier wheel and seven groups of supporting wheels; the rear drive axle and the front axle are installed on the main frame, the rear drive wheel is arranged at both ends of the rear drive axle, the engine is arranged on the main frame, the front tensioning wheel is hinged on a lead screw, the lead screw is sleeved in a longitudinal beam square tube on the main frame, the carrier wheel and the supporting wheels are installed on both sides of the main frame, and the two tracks are wound around the rear drive wheel, the front tensioning wheel, the carrier wheel and the supporting wheels; a full-hydraulic stepless transmission is connected in series in the middle of the rear drive axle, and an output shaft of the engine is connected to an input shaft of the full-hydraulic stepless transmission through a transmission member.

[0015] Further, the cotton picking table is composed of an auger conveyor and three or more picking monomers, the picking monomer is composed of a picking brush with a pair of rollers, the auger conveyor comprises a transverse auger and a longitudinal auger corresponding to the picking monomer, and the auger is used to convey the picked cotton seeds of the picking monomer to the conveying channel.

[0016] Further, the elliptical tracks of the fixed chain harrow group and the rotating chain harrow group are uniformly provided with chain harrows.

[0017] Further, the heavy impurity separator has an adjustable outlet at the bottom end.

[0018] Further, the front upward angle and the rear upward angle of the track with respect to the ground range from 45° to 55°.

[0019] Further, the main frame is provided with an oil tank at the lower part.

[0020] Further, the front part of the main frame is provided with a cab and a hook and a power shaft seat used for coupling the fixed cotton picking table in parallel.

[0021] The beneficial effects of the present application are: 1) since the cotton picking platform, pneumatic conveying system and side discharge cotton box are all installed on the track chassis, the cotton field in the Yellow River Basin and the Yangtze River Basin can be adapted; 2) since the side discharge cotton box is provided, the picked cotton is discharged to one side after turning over; 3) since the large span is more than 2m, the standardization planting of cotton 76cm row spacing can be adopted, that is, 3 rows are crossed and 3 rows are picked, or more rows are crossed and picked, which effectively avoids the track from pushing down and crushing the cotton stalks; on the other hand, it also reduces the resistance of the cotton stalks to the machine, prolongs the service life of the track, is economical and efficient; 4) since the conveying channel itself can be telescopic and can rotate around the bottom shaft, the cotton pneumatic output of multiple positions and multiple angles is realized; 5) since the self-pressing limiter is installed on the track, the track can be tightly attached to the ground and compacted, the profiling effect is improved, and the track is not easy to derail; 6) since the support points of the cotton box base and the cotton box turning support seat are on the inner sides of the two tracks, when the cotton picker picking platform is installed, the center of gravity of the cotton picker and the cotton storage box installed on the cotton box base are all on the inner sides of the two tracks, and when the cotton box is turned over, the cotton box turning support seat ensures that the center of gravity of the cotton storage box is also on the inner sides of the two tracks, thereby avoiding the risk of the whole chassis turning over caused by the side turning of the cotton box; 7) since the rear part of the main frame adopts a double-layer structure and forms a 20°-30° upward extension support backward and upward, the side discharge cotton box can be installed on the track chassis, the cotton is stored while picking, and the loading and unloading transportability and safety of the whole machine are effectively improved; 8) the rear axle driving mode is adopted, when the cotton picker is running, the upper layer of the track is loose and the lower layer is tight, which makes the track and the skid more compact, which is beneficial to adapt to various working conditions such as slope or ditch; 9) since the front and rear upward angles of the track to the ground are 45°-55°, the field operation is more convenient, has good passability, and is beneficial to efficient forward or backward movement on different slope terrains; 10) since the oil tank is installed at the lower part of the main frame, it plays the role of counterweight, effectively reduces the center of gravity of the whole chassis, and avoids the chassis from turning over or tilting. BRIEF DESCRIPTION OF DRAWINGS

[0022] The track type cotton boll combined harvester of the present application will be further described below in combination with the drawings

[0023] Figure 1 is the front view of the track type cotton boll combined harvester in the embodiment,

[0024] Figure 2 is the top view of Figure 1 ,

[0025] Figure 3 is the left view of Figure 1 ,

[0026] Figure 4 isFigure 1 The right view,

[0027] Figure 5 yes Figure 1 A schematic diagram of the conveyor channel structure separated from the middle.

[0028] Figure 6 yes Figure 4 A schematic diagram of the structure when the cotton box rises and flips 45 degrees to the right.

[0029] Figure 7 yes Figure 4 A schematic diagram of the structure when the cotton box rises and flips 90 degrees to the right.

[0030] Figure 8 yes Figure 3 A schematic diagram of the structure when the cotton box rises and flips 90 degrees to the left.

[0031] Figure 9 yes Figure 8 The right view,

[0032] Figure 10 yes Figure 1 Front view of the split tracked chassis.

[0033] Figure 11 yes Figure 10 Top view,

[0034] Figure 12 yes Figure 10 The right view,

[0035] Figure 13 yes Figure 10 A schematic diagram of the structure of the limit switch separated from the middle.

[0036] Figure 14 yes Figure 10 A schematic diagram of the split-type front tensioning wheel.

[0037] Fig. 1 cab, 2 picking table hanging seat, 3 intermediate power shaft seat, 4 tensioning wheel, 5 track, 6 carrier wheel, 7 tensioning slide rocker, 7-1 slide rocker, 7-2 spring, 7-3 support, 7-4 mandrel, 7-5 guide shaft, 7-6 limit plate, 8 main frame, 9 carrier wheel, 10 rear drive wheel, 11 engine, 12 hydraulic stepless transmission, 13 cotton box base, 14 cotton box overturning support seat, 15 cotton box support stopper, 16 front axle, 17 rear drive axle, 18 picking table, 19 side discharge cotton box, 20 fan, 20-1 high-speed airflow nozzle, 21 conveying channel, 21-1 upper section of conveying channel, 21-2 middle section of conveying channel, 21-3 lower section of conveying channel, 22 heavy impurity separator, 23 inlet door, 24 lifting oil cylinder, 25-1 upper pull rod, 25-2 lower pull rod, 26 continuous swing body, 26-1 rotating shaft, 26-2 slide shaft, 27 fixed chain harrow group, 28 rotating chain harrow group, 28-1 harrowing plate, 29 green peach separating port, 30 cotton box inclined support, 31 outlet door, 31-1 hinge, 32 oil tank, 33 hydraulic motor, 34 lead screw, 35 longitudinal beam square tube, 36 adjusting nut, 37 cotton box rotating shaft. Embodiment Example

[0038] The track-type cotton boll harvester of the present embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , comprises a track chassis and a cab 1, a cotton picking table 18, a pneumatic conveying system and a side discharge cotton box 19 arranged on the track chassis; the cab 1 is installed on the right front side of the track chassis, and the cotton picking table 18 is hingedly connected to the track chassis through a suspension bracket;

[0039] As shown in Figure 1 , the pneumatic conveying system comprises a fan 20 and a conveying channel 21, and the conveying channel 21 is located on the left side of the cab 1; as shown in Figure 5As shown, the conveying channel 21 is divided into three sections, the upper section 21-1 is sleeved with the middle section 21-2, the upper section slides relative to the middle section, so the extension of the conveying channel 21 can be adjusted, the upper section rotates around the long axis of the middle section with the middle section, the middle section 21-2 is hinged with the lower section 21-3, the lower section 21-3 is fixed to the outlet of the cotton picking table and floats with the picking table. The bottom of the lower section 21-3 of the conveying channel 21 is open and is provided with a heavy impurity separator 22 and a high-speed airflow nozzle 20-1, the heavy impurity separator 22 is located before the high-speed airflow nozzle 20-1 (i.e. the air outlet of the fan 20). When the bolls are sucked by the airflow blown by the high-speed airflow nozzle 20-1 in the conveying channel 21, the heavy impurities mixed in the bolls are separated by the heavy impurity separator 22 first. The outlet of the heavy impurity separator 22 is adjustable, the outlet angle can be adjusted according to the shedding rate, single boll weight and other factors. The middle section 21-2 of the conveying channel 21 is provided with a green boll separation opening 29 at the bottom, and the outlet of the upper section 21-1 of the conveying channel 21 is opposite to the inlet opening door 23 of the front side of the side-unloading cotton box 19. Since the conveying channel 21 itself can be extended and contracted and can rotate around the bottom rotating shaft, the cotton pneumatic output with multiple positions and multiple elevation angles is realized.

[0040] As shown in Figure 10 , Figure 11 and Figure 12 , the track chassis includes a main frame 8 and two tracks 5 installed on both sides of the main frame 8, the main frame 8 is provided with a cotton box base 13, a cotton box overturning support seat 14 and a cotton box support stopper 15. The distance between the two tracks 5 is greater than or equal to 2 meters, and the cotton box base, the cotton box overturning support seat and the lower supporting point of the lifting oil cylinder are located on the inner side of the two tracks.

[0041] As shown in Figure 4 , 6 , the main frame 8 is fixed with a diagonal brace 30 and a lifting oil cylinder 24, the two side surfaces of the side-unloading cotton box 19 are hinged with the diagonal brace 30 and the lifting oil cylinder 24, when the lifting oil cylinder 24 is lifted, the side-unloading cotton box 19 is overturned along the cotton box rotating shaft 37 to one side of the track chassis. The side-unloading cotton box 19 further includes a group connecting pull rod, a swing body 26 and a rake group. The group connecting pull rod includes an upper pull rod 25-1 and a lower pull rod 25-2, as shown in Figure 7 , Figure 8 and Figure 9As shown, the chain rake group comprises a fixed chain rake group 27 and a rotating chain rake group 28, and the fixed chain rake group 27 and the rotating chain rake group 28 are connected in series by double-pitch chains, and the chain oval track direction of the fixed chain rake group 27 and the rotating chain rake group 28 is uniformly provided with chain rakes 28-1. One end of the upper pull rod 25-1 is hinged to the continuous swing body 26, and the other end is hinged to the rotating chain rake 28; one end of the lower pull rod 25-2 is hinged to the continuous swing body 26, and the other end is hinged to the inclined support 30 of the cotton box. When the upper pull rod 25-1 rotates, it can push the rotating chain rake 28 to rotate until it is in the same plane as the fixed chain rake group 27. The front side of the cotton box 19 is provided with an inlet door 23, and the top of the cotton box 19 is provided with an outlet door 31. The continuous swing body 26 is hinged to the side of the cotton box 1 through a rotating shaft 26-1, and the front side of the inlet door 23 is hinged to the side of the cotton box 19 through a pin shaft 23-1.

[0042] As shown in Figure 7 , 8 , when the side-unloading cotton box 19 is side-tilted, the height of the side of the top outlet door 31 after turning is 2.4-2.6m, which is beneficial to direct unloading into the drag bucket and achieves rapid transfer.

[0043] As shown in Figure 1 and Figure 10 , the side-unloading cotton box 19 is installed on the cotton box base 13, the cotton box overturning support seat 14 and the cotton box support stopper 15.

[0044] As shown in Figure 10 , Figure 11 and Figure 12 , the track chassis further comprises a rear drive axle 16, a front axle 17, a main frame 8, an engine 11, a rear drive wheel 10, two tracks 5, a front tensioning wheel 4, a carrier wheel 9 and seven groups of supporting wheels 6; the rear drive axle 16 and the front axle 17 are installed on the main frame 8, the rear drive wheel 10 is installed at both ends of the rear drive axle 16 through a spline shaft, the carrier wheel 9 and the supporting wheel 6 are installed on both sides of the main frame 8, and the two tracks 5 are wound around the rear drive wheel 10, the front tensioning wheel 4, the carrier wheel 9 and the supporting wheel 6; a full-hydraulic stepless transmission 12 is connected in series in the middle of the rear drive axle 16; the carrier wheel 9 is installed in the middle of the upper layer of the main frame, and the supporting wheel 6 is installed in the lower layer of the main frame 8 in the horizontal direction; the output shaft of the engine 11 is connected to the input shaft of the full-hydraulic stepless transmission 12 through a transmission member; the distance between the two tracks 5 is greater than or equal to 2m, and the cotton box base 13, the cotton box overturning support seat 14 and the cotton box support stopper 15 are further installed on the main frame 8, and the supporting force points of the cotton box base 13, the cotton box overturning support seat 14 and the lower supporting force point of the lifting oil cylinder 24 are on the inner side of the two tracks.

[0045] As shown in Figure 10 , two self-pressing limiters 7 are arranged at the front and rear positions of the two tracks 5. As shown in Figure 13The position limiter comprises a skid 7-1 freely floating inside the track 5 and a spring 7-2. The skid 7-1 is flat at the bottom and has two ends raised and contains an inner guide groove, which can effectively remove sand; the inner guide groove of the skid 7-1 is provided with two supports 7-3, each of which is horizontally mounted with a mandrel 7-4, and each end of the mandrel 7-4 is provided with a guide shaft 7-5 perpendicular to the mandrel 7-4, and the spring 7-2 is sleeved on the guide shaft 7-5; one end of the guide shaft 7-5 is fixed with the mandrel 7-4, and the other end of the guide shaft 7-5 is floating and penetrates the limiting plate 7-6; the limiting plate 7-6 is fixed on the lower layer of the main frame 8.

[0046] As shown in Figure 10 The rear part of the main frame 8 adopts a double-layer structure and forms an extension support frame with a rear upward angle of 20°-30°, and the cotton box base 13 and the cotton box overturning support seat 14 are arranged on the extension support frame, and the cotton box support stopper 15 is arranged on both sides of the extension support frame. The front upward angle β and the rear upward angle α of the track 5 to the ground are 45°-55°. The oil tank 32 is arranged at the lower part of the cotton box base 13. The front part of the main frame 8 is mounted with the hook 2 and the power shaft seat 3 (the hook 2 and the power shaft seat 3 constitute the aforementioned suspension frame) which are arranged side by side with the cab 1 and are used for connecting and fixing the cotton picking table 18.

[0047] As shown in Figure 14 The front tensioning wheel 4 is hinged on the lead screw 34, the lead screw 34 is sleeved in the longitudinal beam square tube 35 on the main frame 8, and the tensioning track 5 is realized by adjusting the expansion lead screw through the adjusting nut 36.

[0048] When advancing, the full-hydraulic stepless speed change 12 drives the rear drive wheels 10 to rotate counterclockwise, thereby driving the upper layer of the track 5 to transport forward and the lower layer of the track 5 to transport backward, and under the joint action of the tensioning wheel 4, the supporting wheel 6 and the supporting wheel 9, the track 5 can advance in the guide of the position limiter 7.

[0049] When retreating, the full-hydraulic stepless speed change 12 drives the rear drive wheels 10 at both ends of the rear drive axle 16 to rotate clockwise, thereby driving the upper layer of the track 5 to transport backward and the lower layer of the track 5 to transport forward, and under the joint action of the tensioning wheel 4, the supporting wheel 6 and the supporting wheel 9, the track 5 can retreat in the guide of the position limiter 7.

[0050] When turning, the rear drive wheels 10 at both ends of the rear drive axle 16 are driven by the full-hydraulic stepless speed change 12 to drive the track 5 at different speeds, the inner ring rotates at a low speed, and the outer ring rotates at a high speed, and the quick turning is realized through the differential principle.

[0051] As shown in Figure 1As shown, the cotton picking table 18 as prior art is composed of a flight conveyor and three or more picking units, each of which is composed of a pair of picking brushes. The flight conveyor includes a transverse flight and a longitudinal flight corresponding to the picking units, which is used to convey the picked cotton to the conveying channel.

[0052] The inlet door 23 of the cotton box 19 is opened during cotton picking and closed during side discharge.

[0053] The top outlet door 31 is closed by gravity during cotton picking and opened by rotation during side discharge.

[0054] The initial position of the cotton box 19 is shown in Figure 3 and 4 As shown in Figure 6 , 7 , 8 and 9, the lifting cylinder 24 is raised, and the cotton box 19 starts to rotate upward to the right around the rotation axis 37. The lower pull rod 25-2 pulls the continuous swing body to rotate around the rotation axis 26-1. The slide shaft on the continuous swing body 26 pushes the inlet door 23 to close. The rotating continuous swing body 26 drives the upper pull rod 25-1 to rotate the rotating chain harrow group 28 until it is in the same plane as the fixed chain harrow group 27. The 45-degree rotation position of the cotton box 19 is shown in Figure 6 The 90-degree rotation position of the cotton box is shown in Figure 7 , Figure 8 and Figure 9 When the cotton box is rotated by 90 degrees, the outlet door 31 is in a natural downward state and can rotate around its hinge axis 31-1. In the case of a large amount of cotton, the outlet door 31 is pushed and opened by itself. Then, the hydraulic motor 33 is started, and the cotton is discharged from the cotton box under the guidance of the rotating chain harrow 28.

[0055] The above is only a preferred embodiment of the present application, but the present application is not limited thereto. All equivalent replacements or equivalent changes according to the concept and technical solution of the present application should be covered within the protection scope of the present application.

Claims

1. A tracked cotton boll harvester, characterized in that: It includes a tracked chassis and a driver's cab mounted on the tracked chassis, a cotton picking platform, a pneumatic conveying system, and a side-discharge cotton box; The cotton picking platform is hinged to the tracked chassis via a suspension frame; The pneumatic conveying system includes a fan and a conveying channel; the conveying channel is divided into three sections: upper, middle and lower. The upper section is connected to the middle section, the middle section is hinged to the lower section, and the lower section is fixed to the outlet of the cotton picking platform; the lower section of the conveying channel floats with the picking platform, and the outlet of the upper section of the conveying channel faces the cotton inlet on the front side of the cotton box. The tracked chassis includes a main frame and two tracks installed on both sides of the main frame. A cotton box base, a cotton box tilting support seat, and a cotton box support bracket are installed on the main frame. The cotton box is installed on the cotton box base, the cotton box tilting support seat, and the cotton box support bracket. A diagonal brace and a lifting cylinder are fixed on the main frame. The distance between the two tracks is greater than or equal to two meters, and the lower support point of the cotton box base, the cotton box tilting support seat and the lifting cylinder is on the inner side of the two tracks. The cotton box is hinged to the diagonal brace and the lifting cylinder on both sides. The front of the cotton box has an inlet door, and the top of the cotton box has an outlet door. When the lifting cylinder is raised, it drives the cotton box to flip to one side of the track chassis. Two self-pressurizing limiters are installed at the front and rear positions of the track. The limiter includes a skid and a spring that float freely inside the track. The bottom of the skid is flat, the two ends are raised and contain an inner guide groove. The inner guide groove of the skid is provided with two supports. A spindle is installed horizontally on the support. A guide shaft perpendicular to the spindle is provided at each end of the spindle. The spring is sleeved on the guide shaft. One end of the guide shaft is fixed to the spindle, and the other end of the guide shaft floats and is inserted into the limit plate. The limit plate is fixed to the lower layer of the main frame.

2. The tracked cotton boll harvester according to claim 1, characterized in that: The cotton box also includes a connecting rod, a swing body, and a chain rake assembly; the connecting rod includes an upper rod and a lower rod, the upper rod being hinged to the rotating chain rake and the swing body respectively, the lower rod being hinged to the cotton box inclined support and the swing body respectively, the chain rake assembly including a fixed chain rake assembly and a rotating chain rake assembly, the fixed chain rake assembly and the rotating chain rake assembly being connected by a double-pitch chain, the swing body being hinged to the side of the cotton box, and the cotton inlet door being hinged to the side of the cotton box.

3. The tracked cotton boll harvester according to claim 1, characterized in that: The lower section of the conveying channel has an opening at the bottom and is equipped with a heavy-duty separator and a high-speed airflow nozzle. The heavy-duty separator is located in front of the high-speed airflow nozzle. The middle section of the conveying channel has a green peach separation port at the bottom.

4. The tracked cotton boll harvester according to claim 1, characterized in that: The rear of the main frame adopts a double-layer structure and forms an extended support frame with an elevation angle of 20° to 30° to the rear and upward. The cotton box base and the cotton box flip support are located on the extended support frame, and the cotton box support bracket is located on both sides of the extended support frame.

5. The tracked cotton boll harvester according to any one of claims 1-4, characterized in that: The tracked chassis also includes a rear drive axle, a front axle, a main frame, an engine, a rear drive wheel, two tracks, a front tension roller, a carrier roller, and seven sets of support rollers. The rear drive axle and the front axle are mounted on the main frame. The rear drive wheel is mounted at both ends of the rear drive axle. The engine is mounted on the main frame. The front tension roller is hinged to a lead screw, which is loosely fitted inside the longitudinal beam square tube on the main frame. The carrier roller and support roller are mounted on both sides of the main frame. The two tracks are wrapped around the rear drive wheel, the front tension roller, the carrier roller, and the support roller. A fully hydraulic continuously variable transmission (CVT) is connected in series in the middle of the rear drive axle. The output shaft of the engine is connected to the input shaft of the fully hydraulic CVT through a transmission component.

6. The tracked cotton boll harvester according to any one of claims 1-4, characterized in that: The cotton picking platform consists of an auger conveyor and three or more rows of picking units. Each picking unit is composed of a set of picking brushes with rollers. The auger conveyor includes a transverse auger and a longitudinal auger corresponding to the picking unit. The auger is used to transport the seed cotton picked by the picking unit to the conveying channel.

7. The tracked cotton boll harvester according to claim 2, characterized in that: The fixed chain rake group and the rotating chain rake group have chain rakes evenly distributed along their elliptical tracks.

8. The tracked cotton boll harvester according to claim 3, characterized in that: The bottom of the heavy-mixed separator has an adjustable outlet.

9. The tracked cotton boll harvester according to any one of claims 1-4, characterized in that: The track's forward and backward pitch angles relative to the ground range from 45° to 55°; an oil tank is installed at the lower part of the main frame; a driver's cab and hooks and a drive shaft seat for connecting and fixing the cotton picking platform are installed side by side at the front of the main frame.

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